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Thread: The future of O2 storage?

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    RBW Member moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund is a glorious beacon of light moribund's Avatar
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    The future of O2 storage?

    Weird Crystal Can Absorb All The Oxygen In A Room -- And Then Release It Later

    Researchers from the University of Southern Denmark say they’ve invented a crystal that pulls oxygen out of the air and even water. Apparently, just a spoonful of the stuff can suck up all the oxygen in a room.


    The Oxygen-Absorbing Material.
    U. of Southern Denmark
    The crystal is a salt made from cobalt*, and it appears to be capable of holding oxygen at a concentration that is 160 times higher than the air we breathe. The paper notes that "an excess" of the substance would bind up to 99 percent of the oxygen in a room.
    But what’s more remarkable is that the crystal can later release the oxygen when exposed to heat or low-oxygen conditions. In a press release, study author Christine McKenzie likens it to the hemoglobin in our blood, which uses iron to bind and release oxygen in the human body.

    If the substance lives up to its promises, it could have a lot of really cool applications—for example, feeding high concentrations of oxygen into hydrogen fuel cells, and lightening the load for lung patients who have to lug around heavy oxygen supplies. Also, scuba divers could potentially leave their tanks at home, says McKenzie. “A few grains contain enough oxygen for one breath, and as the material can absorb oxygen from the water around the diver and supply the diver with it, the diver will not need to bring more than these few grains."

    The study was published in Chemical Science.

    *If you must know, the chemical name of the salt is written out as [{(bpbp)Co2II(NO3)}2(NH2bdc)](NO3)2 * 2H2O, where “bpbp” stands for 2,6-bis(N,N-bis(2-pyridylmethyl)-aminomethyl)-4-tert-butylphenolato, and “NH2bdc2” stands for 2-amino-1,4-benzenedicarboxylato). Don’t ask us how to pronounce all that.

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    The future of O2 storage?

    I guess I won't need my rebreather anymore. Chemical gills is the wave of the future.


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    The future of O2 storage?

    The only oxygen available in water is dissolved oxygen (DO), which is something in the order of 12 mg/L H2O. You'd have to expose (ie run through a chamber containing this chemical) a LOT of water to pull out enough DO for a diver. (We're talking jet pack flow rates).

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    Re: The future of O2 storage?

    Not to mention removal of CO2 and the whole O2 tox thing: I reckon all you'd save is the oxygen bottle and keep the rest of the rig.

    Still, that'd be a lot less mucking around with gas bottle hire, boosting etc, if it could be made to work simply.

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    Underwater Journal Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns is a name known to all Walt Stearns's Avatar
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    Re: The future of O2 storage?

    Great! even more electronics we have to depend on in an environment that can be deadly on anything dependant on electrical power.
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    Re: The future of O2 storage?

    O2 that is stored (uncompressed) to be released with either a little heat or O2 deprived pressure.....Hmmm...possibilities.

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    The future of O2 storage?

    Quote Originally Posted by Walt Stearns  View Original Post
    Great! even more electronics we have to depend on in an environment that can be deadly on anything dependant on electrical power.
    Ok just chemically controlled, if the crystals starts releasing O2 when O2 gets low.
    Who knows, maybe this crystal can be "tuned" when O2 drops below a certain PO2

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    Re: The future of O2 storage?

    I cant see the advantages over a simple tank full of compressed O2.
    How big would the crystals need to be to hold 600 odd litres of O2? I'd say bigger and heavier than a 3L Faber.

    BUT..... could this lead to a new O2 cell technology?
    Last edited by Packhorse; 9th October 2014 at 07:36.

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    Re: The future of O2 storage?

    If the crystals could be "tuned" to only offgas when the ambient drops below a certain amount (eg 1.2 bar?) and do that reliably it could do away with the need for O2 sensors altogether.

    Well, nearly, it would demote them to about the same level as a CO2 sensor in new machines - a watch and warn device, not an integral part of maintaining the right conditions.

    That'd be kinda nice! :)

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